Advertisements
Advertisements
प्रश्न
Exercise.
The values of current (I) flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?
| I (ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volt) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
Advertisements
उत्तर

Resistance(R) = \[\frac{\text{∆V}}{\text{∆I}}\]
= 10.2 – `"6.7"/"3"` – 2 = 3.5/1
R = 3.5Ω
APPEARS IN
संबंधित प्रश्न
Name three factors on which resistance of a given wire depends and state how is it affected by the factors stated by you.
Draw a I–V graph for a linear resistor. What does its slope represent?
An electric bulb is rated ‘240 V, 100 W’.
- What information can you get from the above statement?
- What will happen if this bulb is connected across 220 V?
- Calculate the resistance of the bulb.
- Also find the energy consumed by the bulb in 10 minutes.
Resistors are connected in series if the resistance of the electric circuit is to be ______.
Three resistors are connected in series with a cell. If the current in each resistor is 1.5A, then the current through the cell will be ______.
Three resistors are connected in parallel with a battery. If the current in each resistor is 2A, then the current through the battery will be ______.
The ______ is the measure of opposition offered by the component to the flow of electric current through it.
Define the following:
Variable resistor
Define the term resistance.
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more specific resistance?
